I did 20% on front, added 70% to the privacy glass in the rear (bringing it to about 15% overall, but with good heat / UV rejection). Zero issues with dash dimming.
I am debating if I do a 90% on the windshield. Didn’t bother with the sunroof since it is either open all the way, or closed all the way during the day. The only time the glass is visible without being open is at night.
